Questions Asked on
March 29, 2010

math
Solve the problem. Use 3.14 for ð. Round to the nearest tenth, if necessary. A cylindrical container has a diameter of 10 in. and a volume of 549.5 in3. What is the height of the container?
asked by Cindy 
TSU Chemistry
Which of the following reactions needs to be reversed to solve for the Heat of Neutralization between Hydrochloric Acid and Ammonia
asked by Pam 
Finance
The Monley Corporation of New Jersey has gross profits of $980,000 and $260,000 in depreciation expense. The Majors Corporation of Nebraska also has $980,000 in gross profit, with $60,000 in depreciation expense. Selling and administrative expense is
asked by Mesha 
Math for Elementary Teachers II
How many 4digit license plates can be made by using the digits 0, 2, 4, 6, and 8 if repetitions are allowed? if repetitions are not allowed?
asked by Michael 
math
y=5x+5 2y+10x=78 Please help i don't know how to solve this System of Equations Thanks
asked by rachel 
MATH157
Consider the experiment of rolling a single die. Find the probability of the event described. What is the P(odd and prime)? A) 1/6 B) 1/2 C) 2/3 D) 1/3
asked by Tyga 
Finance
The Monley Corporation of New Jersey has gross profits of $980,000 and $260,000 in depreciation expense. The Majors Corporation of Nebraska also has $980,000 in gross profit, with $60,000 in depreciation expense. Selling and administrative expense is
asked by Mesha 
MATH 157
Consider a bowl containing 36 different slips of paper. Ten of the slips of paper each contain one of the digits from the set 0 through 9 and 26 slips each contain one of the 26 capital letters of the alphabet. If one slip is drawn at random, what is
asked by Tyga 
Principle of Accounting
t is stand accounting procedures, or GAAP, to make an adjusting entry to remove the current year�s principle from the longterm liabilities. This entry reduces the longterm liabilities and increases the current liabilities. You are the bookkeeper for
asked by Tammy 
ppo
Discuss the general environmental challenges of international management that a manager faces in the global environment that she would not face in a domestic
asked by Anonymous 
Calculus
Given f(x)=sin(x)2cos(x) on the interval [0,2pi]. Determine where the function is concave up and concave down.
asked by Sarah 
biology
Replication of the E. coli chromosome takes 40 to 45 minutes, but the organism has a generation time of 26 minutes. How does the cell have time to make complete chromosomes for each daughter cell? For each granddaughter cell? my reponse was that the cells
asked by anon 
Physics *(URGENT)
Use a sentence to describe how the spacing of the dots for the accelerated motion is different from the spacing of the dots you would expect for uniform motion. In accelerated motion the dots are spaced further apart as the time increases. Would my answer
asked by John 
chemistry
identify the atoms that are being oxidized and reduced.. 2FeCl3 + 2KI > 2FeCl2 + 2KCl + I2
asked by steven 
Physics 2 (URGENT)
Which of the following has an acceleration in the same direction as the object's motion? 1. Vi=3.5m/s [east]; Vf=7.5m/s [east] 2. Vi=45km/h [north]; Vf=60km/h [north] 3. Vi=15m/s [right]; Vf=10m/s [left] Textbook Ans: 1 and 2 Can someone explain why? Cause
asked by John 
English
1. This is the book whose cover is red. This is the book. + Its cover is red. 2. This is the book of which the cover is red. This is the book. + The cover of it is red. => This is the book the cover of which is red. => This is the book whose cover is red.
asked by rfvv 
classroom instruction
• How do classroom management issues differ, depending on the subject matter?
asked by scooby 
Astronomy
Suppose you received a message from aliens living on a planet orbiting a star identical to our Sun. They say they live 4 times farther from tier star than Earth is from the sun. What is the length of their year compare to ours?
asked by Anonymous 
Astronomy
The great galaxy in Andromeda has an angular diameter along its long axis of about 5 degree. Its distance is about 2.2 million light years. What is its linear diameter?
asked by BB 
chemistry
Which of the following ionic compounds is INSOLUBLE in water? a. CuSO4 b. AgBr c. KI d. (NH4)2CO3 e. LiNO3
asked by kolin 
chemistry
What volume of WATER MUST BE ADDED to 10.0 mL of 6.0 M NaOH to make a solution that is 0.30 M in NaOH? Assume that the volumes are additive. a. 10 mL b. 190 mL c. 200 mL d. 210 mL e. 500 mL
asked by lawrence 
math
if f(x)=13x/2+x find an exact value of f(1/2)
asked by Luke 
make
make f the subject of the formula: D=square root p/fp
asked by Luke 
Com 220
What does it mean when asked to paraphrase a article? Do I use my own words or the authors words?
asked by Suzanne 
physics
a 125Newton box is pulled east along a horizontal surface with a force of 60Newton acting at an angle of 42degrees. if the force of friction on the box is 15 newton, what is the acceleration?
asked by jake 
college physics
Suppose a 69 kg person stands at the edge of a 7.8 m diameter merrygoround turntable that is mounted on frictionless bearings and has a moment of inertia of 1600 kg*m^2. The turntable is at rest initially, but when the person begins running at a speed of
asked by Anonymous 
pre calculus
The conic section whose equation is x 2  3y 2  8x + 12y + 16 = 0, is in Position is I. Is this true or false?
asked by aaa 
algebra
I need help finding the center and latus rectum of the equation: 3y^2  2y + x + 1 = 0
asked by hopple 
algebra
How do i find the transformed equation of the hyperbola xy = 4 when rotated 45 degrees? I don't understand at all. my choices are: A  (x')²(y')² = 4 B  (x')²  (y')² = 4 C  (x')²  (y')² = 8
asked by hopple 
pre calculus
The conic section whose equation is x^2  3y^2  8x + 12y + 16 = 0, is in Position is I. Is this statement true or false
asked by aaa 
algebra
What is major axis for the equation 9x^2 + 16y^2  36x + 96y + 36 = 0
asked by hopple 
Chemistry
The volume of acetic acid in a sample of 500mL of vinegar is determined to be 1mL. What is the v/v percentage of the vinegar?
asked by Stacey 
art
i've got to make a power station using a shoebox and any thing else i can think of any ideas??
asked by hazel 
math
what are the factors of 32
asked by lisa 
physics
A clean glass capillary tube is held vertically in water raised to a height of 7cm. The tube is down depressed and only 5cm of its length is above water. What will be the angle of contact?
asked by Edwin 
statistics
Scores on a test have a mean of 66 and Q3 of 81. The scores have a distribution that is approximately normal. Find the standard deviation. Round your answer to the nearest tenth.
asked by Abby 
12th grade
There are 300 students in 12th grade. What is the total population of the school?
asked by Anonymous 
science
What is e=mc2
asked by Anonymous 
Chemistry
What are the common molecular shapes around the carbons?
asked by Kathleen 
Economics
Suppose you own a home remodeling company. You are currently earning shortrun profits. The home remodeling industry is an increasingcost industry. In the long run, what do you expect will happen to a. Your firm's costs of production? (will production
asked by John 
Chemistry
8. For the reaction H2(g)+I2(g)„\2HI(g); [H2] = 0.95 M; [I2] = 0.78 M; [HI] = 0.27 M. Calculate the equilibrium constant K and describe the direction (forward or reverse) of the reaction. Will adding a catalyst to the reaction alter the direction of the
asked by Kathleen 
social studies
Can someone give me a website to get references on creating a timeline tracking the following major themes/paradigm shifts in Ameeican history from World War I through the end of World War II 1945
asked by Dellaine 
Chemistry
4. Write the balanced equation for CH4+Cl2„_CH2Cl2+HCl 4a. For the reaction in problem 4, ƒ´H = 118.3 kcal/mol. Identify whether this is an exothermic or endothermic reaction. Calculate the ƒ´H when 6.00 g of Cl2 are used in the reaction
asked by Kathleen 
Human Resource Management
Consider these methods for performance appraisal: trait methods, behavioral methods, and results methods. Then select an industry or organization that has many occupational positions within it (the retail industry, the transportation industry, a marketing
asked by Lisa 
Economics
When McDonald's Corp. reduced the price of its Big Mac by 75 percent if customers also purchased french fries and a soft drink, The Wall Street Journal reported that the company was hoping the novel promotion would revive its U. S. sales growth. It didn't.
asked by John 
math
Hello! I came across the following two problems that appear easy but I was not able to construct the needed equations. (1) The profit (in thousand of dollars) on x thousand units of a specialty item is p = 0.6x  14.5. The cost c of manufactoring x
asked by guitarman 
math
According to the center of Science in the Public Interest, the maximum healthy weight for a person who is 5 feet, 5 inches is 150 pounds and the maximum healthy weight for a person 6 feet, 3 inches tall is 200 pounds. The relationship between weight and
asked by guitarman 
college
A line of dancing on Sesame Sreeet across the screen like a chorus line. do the commas go between on,Sesame
asked by heather 
biology
one difference3 between a gastrovascular cavity and a oneway digestive system is the presence or absence of
asked by izzy 
Teaching
Hello! Have a question. I am writing a lesson plan and am confused now. When learners are doing for example a fill in exercise (e.g. they have to put the verbs in brackets in the Past Simple) what kind of a teaching method or technique am i using?It is
asked by refy 
Microbiology
Why are fermentation tubes evaluated at 24 and 48 hrs? If an organism oxidatively metabolizes glucose, what will occur in the fermentation tubes?
asked by Kathleen 
Algebra 2
Solve the following systems of equations graphically. Please state your answer as an ordered pair (x,y). (Do not put spaces between any part of your answer, or it will not be graded as correct.)
asked by Quita 
college algebra
state the domain of f(x) = (x+3)/(x1)
asked by carmen 
physics
a metal cylinder is heated and then cools. if the radius always equals the height, find the expression for the instantaneous rate of change of volum V with respect to the radius r.
asked by luis 
algebra
please help! The width of a rectangle is 4ft less than the length. The area is 12 ft sq. Find the length and the width.
asked by Jerry 
Science
When determining the formula for a compound, it is important to know the valence numbers of each element. Suppose that "element A" has a valence number of 3 and "element B" has a valence of 2. If the two elements combine, then when writing the formula for
asked by Shanda 
college
y  y3 3 ___________ 4 + 2 9 3
asked by julie 
English
Thank you very much for your corrections! Can you please tell me if the following sentences are possible or mean the same? I really hope you can check them, too. 1) The dragon was enraged but Beowulf did not flinch. He raised his sword and gave a mighty
asked by Franco 
business
Is it necessary for a finance Manager (CFO) to understand Accounting if the firm has a professional accountant (CPA)on staff? Why or Why not?
asked by velinda 
Chemistry
Is C2Cl2 a bent molecule
asked by Marijane 
Chemistry Eq. Question
3H2(g) + N2(g) reverse reaction arrow 2NH3(g) What factors would affect the equilibrium constant for the reaction above? (Select all that apply.) increasing the H2 concentration decreasing the NH3 concentration increasing the temperature decreasing the
asked by Jeena 
chemistry
Calculate the total amount (in moles) of Ca and Mg present in a sample of water that required 12.86 ml of 0.0005M EDTA solution to completely complex them.
asked by Ana 
College Chem
4. Write the balanced equation for CH4+Cl2„_CH2Cl2+HCl6. For the reaction in problem 4, Heat of Reaction = 118.3 kcal/mol. Identify whether this is an exothermic or endothermic reaction. Calculate the Heat of Reaction when 6.00 g of Cl2 are used in the
asked by Kathleen 
College Chem
4. Write the balanced equation for CH4+Cl2„_CH2Cl2+HCl What are 3 ways you can speed the reaction in this equation?
asked by Kathleen 
Chem
Which solvent, water or hexane (C6H14), would you choose to dissolve each of the following? 1. NaCl 2. HF 3. Octane 4. (NH4)2SO4
asked by Stephany 
biology
in response to shortened day length and cool temperatures, many trees begin a period of senescence when the breakdown of chlorophyll exceeds chlorophyll production. the leaves of these trees change to yellow and orange. using your knowledge of
asked by ramla 
Edu 310
When is it appropriate to learn individually and when is it appropriate to learn as a member of a group?
asked by alicia 
social studies
what three political groups came out of the french revolution
asked by lisa 
Chemistry
Why do chelating ligands form more stable complexes than ligands that do not chelate?
asked by Anonymous 
religion
What does disfellowship mean? for jehovah witnesses can u help me plz with soem good sites to explain it. thank you
asked by scooby 
math
if you put me into 7 equeal groups with 3 in each group and 5 are left over,what number am i?
asked by Hadiya 
Chem Equilbirum
SO2(g) + NO2(g) reverse reaction arrow SO3(g) + NO (g) At a given temperature, analysis of an equilibrium mixture found [SO2] = 4.00 M, [NO2] = 0.500 M, [SO3] = 3.00 M, and [NO] = 2.00 M. How many moles/liter of NO2 would have to be added to the
asked by Jeena 
calculus
Find an equation of the line tangent to 2x^2xln(x4)y^2=9 at (5,6)
asked by Lori 
science
what amount of ammonium chloride do I need to make a 100 micromolar solution?
asked by Michael 
integrated algebra
solve for x x+1/x=7/x12
asked by Jerry 
accounting
Deane Company issues $5 million, 10year, 9% bonds at 96, with interest payable on July 1 and January 1.The straightline method is used to amortize bond discount. Prepare the journal entry to record interest expense and bond discount amortization on July
asked by Jenny 
Precalculus
a farmer has available 1032 feet of fencing and wishes to enclose a rectangular area. If x represents the width of the rectangle for what value of x is the area the largest A) 256.5 feet b) 258 feet c) 256 feet d) 257 feet
asked by Arielt 
Precalculus
find (f composed of g)(x)=given f(x)=2x squared +3 g(x)=4x cubed +1
asked by Arielt 
Precalculus
state the domain and range of the following f(x)= x squared +4, x more than or equal to zero f(x)= 4/x+2
asked by Arielt 
Precalculus
f(x)=x5 g(x)=1/x1 find the range of the following f(g(x)) g(f(x))
asked by Arielt 
Chemisty
calculate pH of 50.0 mL of a .100 M solution of the weak monoprotic acid HX
asked by Emily 
Spanish
how do you make this sentence singular? Mis hermanos quieren jugar al futbol.
asked by Ummm 
math
The following data set gives the difference between the winning and losing scores in 50 randomly observed highschool basketball games: 2, 12, 1, 2, 12, 5, 14, 2, 45, 9, 1, 8, 18, 28, 9, 4, 30, 16,4, 12, 8, 13, 20, 9, 17, 13, 49, 17, 13, 4, 14, 2, 12, 29,
asked by KiKi 
Math
Isn't 1/7th less than 1/6th?
asked by GGIFT 
finance
1. The Monley Corporation of New Jersey has gross profits of $980,000 and $260,000 in depreciation expense. The Majors Corporation of Nebraska also has $980,000 in gross profit, with $60,000 in depreciation expense. Selling and administrative expense is
asked by victor 
math
using n as the variable, how do you find 3 consecutive integers in which 3 times the sum of the first two is 16 more than the third?
asked by missy 
math
Grade Frequency A 2 B 8 C 11 D 2 F 1 how would this graph change if there were twice as many grades?
asked by KiKi 
PreCal
Find f X g , g X f , and f X f f(x) = 3sqrt x1 g(x) = x^3 + 1 For f(x) the 3 is little above the sqrt sign. My answers were: f(g(x)) = 3sqrt x^3 + 1 1 g(f(x)) = 3sqrt (x1)^3 1 f(f) = 3sqrt x11 My teacher said these were wrong. Please help. I do not
asked by Hannah 
Chemistry NMR
3h 2h 1h 4 3 2 1 0 ppm C2H6O I tried to duplicate the spectrum for this compound. I'm guessing its ethanol but I don't know how to answer the following questions for each peak 1,2,3....1.Chemical shift(ppm) 2.Multiplicity(splitting) 3.Integration(# of h's)
asked by Andy 
Science
You throw a ball upward and then it falls back down. How does the velocity of the ball change as it rises and falls?
asked by Jenna 
biology
in japan, native honeybees have evolved an effective defense strategy against giant Japanese hornets. imported European honeybees, however, are unable to defend themselves. explain this in terms of coevolution?
asked by Lala 
biology
in a relationship that is an example of commensalism, would the species that is neither helped nor harmed evolve in response to the other species?
asked by Lala 
calculus
(6+2y)/(3*sqrt(9y^2)) = Ae^(kt) How do you show the steps to figure what y equals?
asked by David 
Math
Determine two coterminal angles (one positive and one negative) for the given angle. Give your answer in radians. A) 8pi/9 B) 8pi/45 For 8pi/9 I added 18pi/9 which equals 26pi/9  18pi/9 = 10pi/9. I do not know how to find the positive one for 8pi/9 and I
asked by Abbey 
biology
a scientist finds no evidence that species in a community are competing and concludes that competition never played a role in the development of this community. is this conclusion valid?
asked by Lala 
chemistry
calculate the concentration of each solutions: 3 moles of solute dissolved in 2 liter of solution 6 moles of solute dissolved on 9 liters of solution 4 moles of solute dissolved in 3 liters of solution
asked by jess 
Math
Suppose that the chance of reaching into a bag of coins and selecting a quarter is 40%. Write this probability as a decimal and as a fraction.
asked by Justaskin 
chemistry
what is the formula for magnesium with Nitrogen
asked by Tammy 
Chemistry
How much heat is given off when 24.0 g of methane is burned in air? The equation for the reaction is: CH4 + 2O2 => CO2 + 2H2O + 890 kJ What equation or formula should I use to solve this? Thanks!
asked by Lily 
physics
A 1.00kg duck is flying overhead at 1.50 m/s when a hunter fires straight up. The 0.010 0kg bullet is moving 100 m/s when it hits the duck and stays lodged in the duck's body. What is the speed of the duck and bullet immediately after the hit?
asked by jillian 
Geography
[][]Note to teacher: Note from teacher: Imagine you are an elected official with the responsibility of drafting legislation designed to protect our environment. What items will you include in your bill? Who will be responsible for the bill's
asked by math 202 
Chemistry
Which of these is true about the following reaction? NaOH + HCl ¡æ NaCl + H2O A. NaOH is the proton acceptor. B. HCl acts as the Br©ªnstedLowry acid. C. NaOH and HCl are the products. D. This is an example of a neutralization reaction. E. The products
asked by Lily 
English
Describe the picture using the following expressions. (There are some English expressions in a colored box.) 1. How much juice is there in the glass? There is a little juice. 2. How much water is there in the cup? There is a little water in the cup. 3. How
asked by rfvv 
math
circle the digit worth 6/100 in this number 6.666
asked by nguyen 
Chemistry
SO2(g) + NO2(g) reverse reaction arrow SO3(g) + NO (g) At a given temperature, analysis of an equilibrium mixture found [SO2] = 4.00 M, [NO2] = 0.500 M, [SO3] = 3.00 M, and [NO] = 2.00 M. How many moles/liter of NO2 would have to be added to the
asked by Jeena 
English
1. There is a box of apples. 2. There is a bunch of bananas. 3. There are two baskets of oranges. 4. There are a few cartons of milk on the table. 5. There is a bunch of grapes in the box. 6. There are two bunches of grapes in the paper box. (Are the
asked by rfvv 
5th grade
looking for a number sentence the same when you read it from either direction
asked by Anonymous 
religion
what are church services like for jehovah witness i had a site but i lost it can u help me plz ty
asked by scooby 
Chemistry
Which of the following reactions needs to be reversed to solve for the Heat of Neutralization between Hydrochloric Acid and Ammonia? Acetic Acid + Sodium Hydroxide Hydrochloric Acid + Sodium Hydroxide Acetic Acid + Ammonia
asked by Cam 
Math
Insert Parentheses when necessary 72*5/2+6=10
asked by Lisa 
9th grade chemistry
At what temperature will 50. grams of NH4Cl just saturate 100. grams of water? (the 4 is the number of elements)
asked by chemistry challenged 
college algebra
When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= 5t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in ft/sec and “k” is the initial height in
asked by renee 
Chemistry
What is the pH of a 0.0054 molar solution of Oxalic Acid. K1= 6.5E2, K2= 6.1E5? Here's what I have so far for K1: 6.5E2 = (x)(x)/ (x0.0054) x= 0.0059 pH = log(0.0059) = 2.23 K2 is pretty much the same, but I have to work it out. 6.1E5 = (x)(x +
asked by James 
calculas
f(x)=ln[(1+e^2x)/(e^2x4) find the derivative
asked by Lori 
chemistry
Just..... don't get it A column packing for chromatography consists of a mixture of two types of particles. Assume that the particles in the batch being sampled are spherical with a radius of 0.5 mm. 36% of the particles appeared to be pink and are known
asked by Sai 
algebra
A student opens a math book to two facing pages.The product of the page numbers is 210.Find the page numbers. The first page is _________ The second page is________
asked by Rose 
Reseach Paper
Hello, I am writing a research paper and I am at the conclusion part of it. My teacher gave us instructions to not reword the introduction. Does anyone know of a website where I can learn how to create a strong conclusion and bring all my main ideas back
asked by Joan 
chemistry
predict the pH of the solution obtained when a 1.0 M magnesium hydroxide solution is titrated with an equal amount of a 1.0 M solution of sodium chloride.
asked by Ash 
Precalculus help fast
a farmer has available 1032 feet of fencing and wishes to enclose a rectangular area. If x represents the width of the rectangle for what value of x is the area the largest A) 256.5 feet b) 258 feet c) 256 feet d) 257 feet please show work! i need help
asked by Arielt 
English
Can you please check the grammar in the following sentences, please? Thank you very much in advance. 1)If I hadn’t missed it, I would have arrived on time at the theatre and I could have seen Murphy’s performance. 2) I don’t feel well and I’d
asked by Franco 
Physics
In which of the situations listed below is energy being transferred as heat to the system in order for the system to do work? In which situation is work being done on the system in order for energy to be transferred from the system as heat? a. Two sticks
asked by Edward 
business
Consider the cultural differences inherent in global business as well as the geographic obstacles of home office and remote locations being in different countries
asked by Wanda 
Physics
A mixture of gasoline vapor and air is placed in an engine cylinder. The piston has an area of 7.4 x 10^3 m^2 and is displaced inward by 7.2 x 10^2 m. If 9.5 x 10^5 Pa of pressure is placed on the piston, how much work is done during this process? Is
asked by Edward 
chemistry
15.0g of each reactant is taken,determine which mass is limiting and calculate the mass of each product: Al(s)+HCl(aq)>AlCl3(aq)+H2(g)
asked by beth 
US
In 1938 Mexico nationalized America's oil, according to my textbook. What does this mean? I don't get what exactly they did.
asked by Katie 
Science
1.Air can be compressed. What does it mean and why can it be compressed? 2.Air can be expanded. What does it mean and why can it expand? 3.Air also contracts.What does that mean and how does that happen? 4.Can all gases contract and expand? Why or why
asked by Jamie 
Biology
What is the significance of measuring population density?
asked by Anonymous 
Precalculus
a farmer has available 1032 feet of fencing and wishes to enclose a rectangular area. If x represents the width of the rectangle for what value of x is the area the largest A) 256.5 feet b) 258 feet c) 256 feet d) 257 feet please show work! i need help
asked by Help now fast due tommorow 
Science
Write the formula, substitute numbers and units(labels)Mike mixed 20g of 60C water with 40g of 25C water. The final temperature was 39C. 1.Calculate the change of temperature for hot water. 2.Calculate the calories transferred from the hot water.
asked by Jamie 
algebrA
x^27x98=0 whT is the smaller x solution and the larger x solution
asked by ewrwerwe 
physics
A weight suspended from a spring is seen to bob up and down over a distance of 50 centimeters 2 times each second. What is its frequency? What is its period? What is its amplitude?
asked by Alan Thomas 
college chemistry
how could I determine experimentally whether all the potassium chlorate had been decomposed?
asked by Sarah 
PreCal(Please help)
h(x) = 1/x3 + 1 I know the vertical and horizontal asymptotes but I just need to know the domain. Please help. I am very confused.
asked by Hannah 
math
What is the prime factorization of 48?
asked by Alexis 
communications
helath care administration
asked by Anonymous 
medical billing
What Tool Does The National Committee For Quality Assurance Use To Evaluate Health Care?
asked by misty 
medical billing
the file clerk discovered a medical record placed incorrectly in the permanent files by checking for _____ in the last set of twodigit numbers in the medical records numbers.
asked by misty 
physics help!!
a 3.5 kg dog stands on a 21 kg flatboat at distance D = 6.1 m from the shore. It walks 2.3 m along the boat toward shore and then stops. Assuming no friction between the boat and the water, find how far the dog is then from the shore. I thought i have the
asked by Anonymous 
Precalculus
a farmer has available 1032 feet of fencing and wishes to enclose a rectangular area. If x represents the width of the rectangle for what value of x is the area the largest A) 256.5 feet b) 258 feet c) 256 feet d) 257 feet please show work! i need help
asked by Help now fast due tommorow!!!!!!!!!!!!!!!!!!!!!!!! 
social studies
What natural forces have helped shape the physical features of North America?
asked by ahmed 
Maths
Alright, so I'm doing questions on exponent laws for my grade 11 math couse, and I came across one and I've no idea how to answer it. Could someone please explain step by step? According to textbook, answer should be 16: (2^3) / [(2^0)(2^1)] That "1" is
asked by Felicity 
Math
a ladder 10 ft long rests against a vertical wal. if the bottom of the ladder slides away from the wall at a rate of 0.7 ft/s, how fast is the angle between the ladder and the ground changing when the bottom of the ladder is 6 ft fro the wall?
asked by Allie 
critical thinking
is this sentence a valid or sound argument if you want to listen to loud music, do it when we are not at home. It bothers us, and we're your parents
asked by Anonymous 
literary
please can you examples on consonance, allusion,alliteration and juxtaposition?
asked by mike 
College physics
A 3.5A current is maintained in a simple circuit with a total resistance of 1500 W. What net charge passes through any point in the circuit during a thirty second interval?
asked by HELP WITH PHYSICS 
math
Sal keeps quarters, nickels, and dimes in his change jar. He has a total of 52 coins. He has three more quarters than dimes and five fewer nickels than dimes. How many dimes does Sal have? A. 13 B. 18 C. 20 D. 21 E. None of these. Here is the equation I
asked by guitarman 
Critical Thinking
Is the following passage valid/sound/strong arguments and what is the reasoning? If you want to see the best version of the three muskateers, try the 1948 version. Lana Turner is luscious, Vincent Price is dastardly; Angela Lansbury is exquisitely regal;
asked by Lo 
physics
A fish takes the bait and pulls on the line with a force of 2.6 N. The fishing reel, which has a friction clutch that exerts a restraining torque of 0.043 N*m, is a cylinder of radius 0.055 m and mass 0.81 kg. A)What is the angular acceleration of the
asked by Kyle 
physics
When light of wavelength 495 nm passes through a single slit of unknown width, the diffraction pattern displays a fourthorder maximum where the third minimum of light of an unknown wavelength had been observed to fall. What is the unknown wavelength?
asked by jibjab 
Gr. 12 English
I want to use the words inaudibly and contradict in a sentence, but I can't think of any.
asked by AL 87 
Physics
The work required to stretch a certain spring from an elongation of 4.11 cm to an elongation of 5.11 cm is 32.0 J. (a) Is the work required to increase the elongation of the spring from 5.11 cm to 6.11 cm greater than, less than, or equal to 32.0 J? (b)
asked by Carden 
Physics
Catching a wave, a 65 kg surfer starts with a speed of 1.3 m/s, drops through a height of 2.10 m, and ends with a speed of 8.2 m/s. How much nonconservative work was done on the surfer? I have genuinely no idea how to solve this problem.
asked by Carden 
Physics
At a playground, a 18.7 kg child plays on a slide that drops through a height of 2.07 m. The child starts at rest at the top of the slide. On the way down, the slide does a nonconservative work of 318 J on the child. What is the child's speed at the
asked by Carden 
Physics
At a playground, a 18.7 kg child plays on a slide that drops through a height of 2.07 m. The child starts at rest at the top of the slide. On the way down, the slide does a nonconservative work of 318 J on the child. What is the child's speed at the
asked by Carden 
chemistry
Determine the ammoint of lead precipitate in grams that can be produced from 50 grams of ammonium chloride and excess lead II nitrate
asked by Elizabeth 
Math
This week, the Laketown Cruise Company took its boat on 19 cruises, carrying the boat's full capacity of 46 guests on each cruise. If each guest paid $22 admission, then how much admission was collected by the company this week? A) Estimate B) Exact
asked by Kelly 
English
1. She is eating a noodle. 2. She is eating noodles. 3. She ate two bowls of noodles. 4. She ate two bowls of noodle. (Which ones are correct?)
asked by rfvv 
Chemistry
Pt  Fe2+ (6.40105 M), Fe3+ (0.0460 M)  Sn4+ (2.70104 M),Sn2+ (0.0750 M)  Pt i need to calculate the voltage of the cell. I know to use E=emf (RT/nF)lnQ .... I think my problem is with setting up Q. I'm confused on what goes on top and what goes on
asked by Val 
1st grade
if yo have three words friend, things & might which word has the long i sound and which word can you get by adding a sound to in? a tin,b hid c find
asked by Barry 
MATH
Solve the equation 5(n+3)=2(2n+6) Simplify 4(x1)+2(x+4)
asked by Lori 
MathGeometry
Why, in a pyramid, is the slant height different from the altitude?
asked by Sarah 
social studies
in 1975 supreme court justice potter stewart spoke to a group of reporters about freedom of the press he said "if you look at the literal language in the 1st amendment of the constitution it says congress shall pass no law abridging freedom of press. it
asked by kristen 
Chemistry
a compound has an empirical formula of C3H5O2 and a molar mass of 145,14g. what is the molecular formula of this compound?
asked by Sammi 
social studies
should the president be more powerful, less powerful, or stay the same? explain why?
asked by kristen 
Physics
A 0.26 kg rock is thrown vertically upward from the top of a cliff that is 27 m high. When it hits the ground at the base of the cliff the rock has a speed of 24 m/s. (a) Assuming that air resistance can be ignored, find the initial speed of the rock. (b)
asked by Carden 
ScienceChemistry
when u use different materials, what are they most likely to be made from: elements, compunds, or mixtures? Which of the three is the most rare. I think that they are most likely to be made from compounds and mixtures. For ex. popsdrinks, juice, etc.
asked by Sara 
7th grade
convert 1.5L to mL i need answer asap
asked by bessie 
Math
How do I convert a percent WITH a repeating decimal to a fraction?! I need fast help plz!!
asked by Austin 
ScienceChemistry
The alchemists were lookin 4 control over their world. what would the philosophers stone enable them to do? how would this give them control? I wrote: The philospher's stone would enable them to gain fortunes, such as, if they found metal, they could
asked by Sara 
Physics
A 2.1 kg block slides with a speed of 1.1 m/s on a frictionless, horizontal surface until it encounters a spring. (a) If the block compresses the spring 5.7 cm before coming to rest, what is the force constant of the spring? (b) What initial speed should
asked by Carden 
MATH
Solve the equation 5(n+3)=2(2n+6) Simplify 4(x1)+2(x+4)
asked by Lori 
physics
particle 1 of mass m1 = 0.29 kg slides rightward along an x axis on a frictionless floor with a speed of 1.8 m/s. When it reaches x = 0, it undergoes a onedimensional elastic collision with stationary particle 2 of mass m2 = 0.40 kg. When particle 2 then
asked by mike 
Chemistry
How many grams of CuSo4 x 5h20 to prepare 100 mL of a .10M solution?
asked by John 
Chemistry
Pt(s)  H2(g, 2.0 bar)  H+ (pH = 3.0)  Cl (aq, 0.85 mol·L1))  Hg2Cl2(s)  Hg(l) I need to calculate the voltage of the cell. I have a pretty good idea of how to use the Nernst equation for this, but am unsure if I am calculating the concentration of
asked by Val 
math
50=3m+2 i need help asap it is due tomrrow
asked by bessie 
math
0.3m to cm convert i need help asap it is due tomrrow
asked by bessie 
ScienceElements
which of the alchemy symbols is used today with a completely different meaning? what does that symbol mean today? I couldn't find the information for this in my text, I think it's iron, but I'm not sure, your help will be appreciated, thanks
asked by Sara 
math
what type of angle measures 180 degrees? i need help asap it is due tomrrow
asked by bessie 
English/History
President Bush had African Americans in his Cabinet. I cannot find info about President Carter's Cabinet. Did he have any African Am. Cabinet members?
asked by Mary 
chem
why are the MP and BP of deuterium higher than those of protium?
asked by kim p 
math
at $8.00 per hour, how much money will kenji earn working 4 and 1 half? i need help asap due tomrrow
asked by bessie 
Career
My major is business management. where can i find some examples of resumes for a business management fits
asked by Bryan 
math
what is the average of these fractions? 1/12, 1/6, 1/4, 1/3, and 5/12 i need help asap due tomrrow
asked by bessie 
ScienceElements
what stimulated the rapid discovry of new elements during the 1700s? I really don't know the answer to this question. I don't get it.
asked by Sara 
physics
Two flat slides of glass are separated at one edge by a thin wire, as shown below. The top surface of the upper slide and the bottom surface of the lower slide have special coatings on them so that they reflect no light. The system is illuminated with
asked by Jason 
Chemistry
Write a balanced chemical equation for nitrogen gas reacts with oxygen gas to produce nitrogen dioxide gas
asked by Elizabeth 
physics
A neutron collides elastically with a helium nucleus (at rest initially) whose mass is four times that of the neutron. The helium nucleus is observed to move off at an angle =45. The neutron's initial speed is 3.8×105 .
asked by Anonymous 
College Algebra
Trying to figure out the problem in this word proble. The cost, in million of dollars to remove 75% of the pollution in a lke model by c+6000/2002x?
asked by Tanya 
ScienceElements
which elements have symbols based on their latin names? Why? Gold = Aurum Lead = Plumbum Iron = Ferrum Tin = Stannum Copper = Cuprum Mercury = Hydragyrum Potassium = Kalium Sodium = Natrium Tungsten = Wolfram Silver = Argentum Antimony = Stibium Could
asked by Sara 
statistics
Two percent of the circuit boards manufactured by a particular company are defective. If circuit boards are randomly selected for testing, the probability that the number of circuit boards inspected before a defective board is found is greater than 10 is
asked by Hanna 
statistics
Two percent of the circuit boards manufactured by a particular company are defective. If circuit boards are randomly selected for testing, the probability that the number of circuit boards inspected before a defective board is found is greater than 10 is
asked by Hanna 
Science
how does a cloud that is charged with electrons form? What is the charge (positive or negative) of such cloud?
asked by Farah 
Chemistry
can someone explain how to find 1.Chemical shift (ppm) 2.Multiplicity (splitting) 3.intergration (# of h's) for C2H6O
asked by Andy 
math
2ft squared equals how many square inches ? i need help asap it is due tomrrow
asked by bessie 
5th grade
How can you tell if the prepositional phrase is an adverb or adjective phrase?
asked by Deon 
math
a slide moves triangle abc to form a'b'c' what is the proper name of the transformation that formed a'b'c'?
asked by bessie 
chemistry
balance this chemical equation: aqueous solutions of alumininum chloride and sodium carbonate are combined, producing alumininum carbonate
asked by Elizabeth 
math
luke put 2 red pens, 7 blue pens, and 1 black pen in a bag, closed it and shook it up. if the pens are the same size, weight and texture, what is the probally of choosing a red pen? a red or black pen? what is the probability of not choosing a blue pen? if
asked by bessie 
math
5w+1.5=4.5 i need help asap it is due tomrrow
asked by bessie 
math
convert 30degress c to degrees fahrenheit please help asap it is due tomrrow
asked by bessie 
math
name the transformation that turns a figure around a point please help asap it is due tomrrow
asked by bessie 
business
Consider the wide spectrum of business organizations, ranging from gigantic corporations to working at home. Describe at least three types of business organizations that you are familiar with or that you would like to know more about. How is each one
asked by Anonymous 
integrated algebra
8(4a1)=24
asked by brenda 
Chemistry
A mixture of .10 mol of NO, .050 mol of H2 and .10 mol of H20 is placed in a 1 liter vessel at 300 K. The following equilibrium is established. 2 NO + 2 H2 N2 + 2 H20 At equilibrium (N0) = .062 M. What are the equilibrium concentrations of H2 N2 and H20
asked by Thomas 
ScienceElements
what 2 things does the formula of a compound tell us? I'm not sure if I'm right, but this is what I wrote: The formula for the compound tells you that it is two parts hydrogen and one part oxygen. The compound carbon dioxide is one part carbon and two
asked by Sara 
Math : Algebra
I have a whole page of questions I'm trying to complete that are similar to this, but no idea how to do them. If someone could give me a walk through of this question I'd be very appreciative. I'm just suppose to solve the equation. 3n7/(n2)(n3) +
asked by Clark 
math
darla designed a stained glass window that incorporates 20 squares, triangles, and circles altoghether. the window has 2 more triangles than twice the number of squares. the number of circles in the window is a multiple of three. how many of each shape
asked by bessie 
Chemistry
Pt(s)  H2(g, 2.0 bar)  H+ (pH = 3.0)  Cl (aq, 0.85 mol·L1))  Hg2Cl2(s)  Hg(l) I need to calculate the voltage for the cell. I have used 1E3 M for my concentration of H+ given the pH=3 . I don't know how to incorporate the 2.0 bar into the nernst
asked by Val 
chemistry
please check my answer(one with star). The solubility of borax is directly proportional to temperature. Therefore, the sign of H is A. negative* B. positive C. unknown with the given information since solubility shifts the reaction to the right, therefore
asked by eng 
math
convert 25 degrees c to degrees fahrenheit. please help it is due tomrrow
asked by bessie 
chemistry
Explain whether C2H3Cl is polar or nonpolar and why? Explain how electronegativity is applied to the answer.
asked by John 
Chemistry
A mixture of .10 mol of NO, .050 mol of H2 and .10 mol of H20 is placed in a 1 liter vessel at 300 K. The following equilibrium is established. 2 NO + 2 H2 N2 + 2 H20 At equilibrium (N0) = .062 M. What are the equilibrium concentrations of H2 N2 and H20
asked by Thomas 
math
_ _ _ * _ = 1101 please help it is due tomrrow
asked by bessie 
apchemistry
I tried to figure this out with my standard reduction potentials sheet, and tried to find a sulfate ion for the first part, but I don't think that is the answer...any help is much appreciated
asked by Kiki 
calculus
(6+2y)/(3*sqrt(9y^2)) = Ae^(kt) How do you show the steps to figure what y equals?
asked by David 
chemistry
What is the volume in liters of 15.0kg of CO2 at STP
asked by Louisa Lou 
Math(Help!!)
What is the domain? Use a graphing utility to determine the intervals in which the function is increasing and decreasing and approximate any relative maximum or minimun values of the function. g(x) = 12 Ln x / x My answer was: Domain = (12,0) decreasing =
asked by Mark 
Physical Chemistry
A total charge of 97.4 kC passes through an electrolytic cell. Determine the quantity of substance produced in each of the following cases. (a) the mass (in grams) of silver metal from a silver nitrate solution ?g (b) the volume (in liters at 273 K and
asked by Mark 
chemistry
One gram of TNT, C7H5N3O6, has 1.33 ´ 1022 hydrogen atoms. How many carbon atoms are there in 1.00 g of TNT?
asked by David 
education
1.For motor development,the greatest importance for the developing infant is. A.tummy time b.sitting c.crawling d.walking my answer is crawling 2. At what stage does the ability to use imagination begin to develop? A.infancy b.toddlerhood c.preschool
asked by vanessa 
PreCal(Urgent)
Find f X g , g X f , and f X f f(x) = 3sqrt x1 g(x) = x^3 + 1 For f(x) the 3 is little above the sqrt sign. My answers were: f(g(x)) = 3sqrt x^3 + 1 1 g(f(x)) = 3sqrt (x1)^3 1 f(f) = 3sqrt x11 My teacher said these were wrong. Please help. I do not
asked by Hannah 
English
1. I see a woman who is lying on the sofa watching TV. She has put her hand on her cheek. 2. I see a girl who is sleeping on a sofa with the blanket covered. 3. I see a girl who is sleeping on a sofa, covered with a blanket. 4. I see a girl who is lying on
asked by rfvv 
Trig Math
I need help with this problem. I don't get how to do it or how they got that answer. A force of 50 pounds acts on an object at an angle of 45 degrees. A second force of 75 pounds acts on the object at an angle of 30 degrees. What was the direction and the
asked by Jane 
english
I need help thinking of an essay topic to do with responsibility? We have a list of sources to work with, as examples: Frankenstein, Dr. Jekyl and Mr. Hyde, Hamlet, V For Vendetta, The Tell Tale Heart and several others.
asked by Allissa 
Medical Billing
Based on this scenario, complete blocks 21 and 24 of CMS 1500 5/1/10 New F pt comes in complaining of lt great toe pain. Incised, drained, and cleaned area around nail on lt great toe. Dx. Onychia and paronychia. Started on antibiotic and adv to retn in 2
asked by Sharon 
English
1. She is lying on her right side on a sofa, watching TV. 2. She is lying on her right side on a sofa, and watching TV. 3. She is lying on her right side on a sofa while she is watching TV. (Are they all grammatical and the same in meaning?)
asked by rfvv 
english
At the beginning of the school year, Erin is deeply distured by a racial caricature of one of her students that she finds being passed around the room. Why does Erin compare this drawing of an African American student to the drawings of Jewish durind the
asked by A smith 
highschool anatomy
During what period of life does immunocompetence develop?
asked by Kelsey 
English
She is eating a noodle. (Does this mean she is eating a piece of noodle? When she is eating "noodle' for breakfast, what expression do we have to use? 1. She is eating noodles. 2. She is eating a noodle.)
asked by rfvv 
chemistry
The atomic mass of Eu is 151.96. There are only two naturally occurring isotopes of europium, 151Eu with a mass of 151.0 and 153Eu with a mass of 153.0. The natural abundance of the 131Eu isotope must be approximately
asked by Kumar 
Biology
I need help making parenthetical citations within my research paper, crediting sources of information/and or quotation of sources in proper MLA format..can I get some links to help me? Thanks MC
asked by mysterychicken 
Math
Find the exact value of the trigonometric function given that sin u = 5/13 and cos = 3/5 1) sin(uv) My teacher said to make two right triangles and then find the missing parts by the pyth theorem. For the 5/13 triangle I got 12 and the other triangle I
asked by Hannah 
chemistry
Describe three ways you might be able to speed the reaction of CH4+Cl2 > CH2Cl2+HCl
asked by John 
Science
What is the charge of the ground below a negativly charged rain cloud? Why does this occur?
asked by F. 
Chemistry
A 1.50 M solution containing 25 Grams of Al(OH)3 would occupy what volume in liters?
asked by Jacob 
Physical Chemistry
Three electrolytic cells containing solutions of CuNO3, Sn(NO3)2, and Fe(NO3)3, respectively, are connected in series. A current of 2.2 A is passed through the cells until 3.10 g of copper has been deposited in the cell. (a) What masses of tin and iron are
asked by Mark 
Physics
A 0.47 kg pendulum bob is attached to a string 1.2 m long. What is the change in the gravitational potential energy of the system as the bob swings from point A to point B where θ = 31°? I've tried using PE = mgh but I don't know where the 31 degrees
asked by Carden 
9geography
Lowland Regions of Canada How was the bedrock of the lowlands formed? How thick is the bedrock in the interior plains and why is it so thick? Why are the ancient coral reefs of the interior plains important today? Describe the topography of the interior
asked by rebecca 
World History
What happened when the revolutionary dike broke in the early 1830's?
asked by Nicole 
math
A ferris wheel has radius of 25 m and its centre is 27 m above the ground. It rotates once every 40 seconds. Sandy gets on the ferris wheel at its lowest point and the wheel starts to rotate. Determine a sinusodial equation that gives her height, h, above
asked by CL 
Chemistry
If there were two solutions one with areagent(100% pure) mixed in water and the other solution containing the same reagent (99.9% pure) mixed in equal volume of water. How significant would the difference in concentration be between these two solutions?
asked by Andrew 
9geo
Parts of the southern portion of the interior plains are often called Canada's 'breadbasket'. Why? What separates the Great Lakes Lowlands from the St.Lawrance Lowlands? Where does this occur and what is the appearance of this area? Describe the
asked by rebecca 
World History
What were the political and social ramifications of the changing economy in 18301832
asked by Nicole 
chemistry
Draw an energy profile describing an exothermic reaction and label the energy activation and change of heat components of the profle. Calculate the change in heat when 6.00g of 2Cl2 are used in the reaction. Change of heat= 118.3 kcal/mol.
asked by amanda 
10th grade
which of the following belong in which tropic level; catfish, algae, small aquatic plants, phytoplankton, dandelions, walleye, snails, zebra musse, moose, zooplankton, grasshopper, squirrels, loon, cryfish, goby (fish), ducks, wolf, herring, field mouse,
asked by jessica 
Chemistry
Determine the unknown quantity in the following cell at 298.15 K. Pt(s)  H2(g, 1.0 bar) H+(pH = ?)  Cl (aq, 1.0 mol·L1) AgCl(s), Ag(s), ΔE = +0.36 V. (DrBob) I still wasn't able to figure out the other oneI posted again after that one, but I
asked by Val 
Math
What is the domain? Use a graphing utility to determine the intervals in which the function is increasing and decreasing and approximate any relative maximum or minimun values of the function. g(x) = 12 Ln x / x My answer was: Domain = (12,0) decreasing =
asked by Mark 
Chem
In making the ester methyl salicylate, mathanol is reacted with salicylic acid. If 2 grams of salicylic acid is reacted with excess methanol, what mass of ester would you expect to achieve theoretically.. show work
asked by Anonymous 
Chemistry
Is the compound C2H3Cl polar or nonpolar and why?
asked by Kathleen 
math
Make f the subject of the formula D = squareroot p/fp
asked by Luke 
chemistry
If 7.24 kJ of heat is applied to a 952 g block of metal, the temperature increases by 10.7 degrees Celsius. Calculate the specific heat capacity of the metal in J/g degrees Celsius.
asked by Jack 
math
g is a linear function such that g(1)=7.5 and g(7)=12.6 Find the formula for g(x). I've tried doing it and the formula i got was: y = 0.9x + 6.6 is that correct?
asked by Luke 
chemistry
how do you find the mass solute(g), GFM(g/mole), moles of solute, volume of solution, and molarity of solution (M), of CaSO(4)? *how would i solve this set by set? * what are the formulas?
asked by kelly 
crt205
Indentifying fallacies
asked by Tonya 
math
Guy wires 80 feet long support a 65foot tall telephone pole. To the nearest degree, what angle will the wires make with the ground?
asked by Roslyn 
Physics
Coulomb measured the deflection of sphere A when spheres A and B had equal charges and were a distance d apart. He then made the charge on B onethird the charge on A. How far apart would the two spheres then have had to be for A to have had the same
asked by Sasha 
Chemistry
If the temperature of a confined gas is doubled at constant pressure, what change is observed? A) The volume of the gas is decreased to 1/4 of its original value. B) The volume of the gas is increased to twice its original value. C) The density of the gas
asked by Allison 
Math
Find the exact value of the trigonometric function given that sin u = 5/13 and cos = 3/5 1) sin(uv) My teacher said to make two right triangles and then find the missing parts by the pyth theorem. For the 5/13 triangle I got 12 and the other triangle I
asked by Hannah 
Chemistry
How much time is required to electroplate 6.530 µg of chromium from a potassium dichromate solution, by using a current of 118 mA? I thought the ratio of e to moles chromium would be 6/2 but I guess that is wrong? I am using t= nF/A I already made the
asked by Val 
English history
Hi! My assignment is to write a paper on how love and hate relate to Jean Anouilh's Becket. I'm confused about what I should include though. Should I be going over their entire friendship or analyzing only their emotions?
asked by Kat 
algebra
what's the answer to a math problem which is......... about areas of a circle
asked by ashley 
History (this is my daughters)
Will you please check this, my daughter didn't bring home her history book and I have know idea about this. Thank you in advance. In 1846, ELIAS HOWE patented a sewing machine. In 1847, CYRUS McCORMICK opened a factory in chicago that made mechanical
asked by Crystal 
Physics
Two charged bodies exert a force of 0.415 N on each other. If they are moved so that they are onethird as far apart, what force is exerted?
asked by Sasha 
math 3Probability
Could you please explain how to do this question. Suppose that a certain candidate is running in a city election. A recent poll of 500 randomly chosen voters concludes that 60% of the voters prefer this candidate. Determine the probability that the
asked by Sandy 
physics
A rocket is fired straight up through the atmosphere from the South Pole, burning out at an altitude of 208 km when traveling at 5.8 km/s. (a) What maximum distance from Earth's surface does it travel before falling back to Earth? I know how to do the
asked by nate 
PreCal
Find f X g , g X f , and f X f f(x) = 3sqrt x1 g(x) = x^3 + 1 For f(x) the 3 is little above the sqrt sign. My answers were: f(g(x)) = 3sqrt x^3 + 1 1 g(f(x)) = 3sqrt (x1)^3 1 f(f) = 3sqrt x11 My teacher said these were wrong. Please help. I do not
asked by Hannah 
Chemistry
Describe three ways you might be able to speed the reaction of CH4+Cl2 > CH2Cl2+HCl (answer given by unknown member didn't seem correct)
asked by John 
trig
v = 8 u = find the vector
asked by victor 
chemistry
What quantity of heat is required to warm 53.7 g of liquid water from 0°C to 100°C?
asked by rachel 
calculus
for x is an element of [11,11]the function defined by f(x)=x^7(x+3)^6. where does the function achieve its minimum?
asked by ash 
NEED HELP! CHEMISTRY
Three electrolytic cells containing solutions of CuNO3, Sn(NO3)2, and Fe(NO3)3, respectively, are connected in series. A current of 2.2 A is passed through the cells until 3.10 g of copper has been deposited in the cell. (a) What masses of tin and iron are
asked by Mark 
Chemistry
CH4+Cl2 > CH2Cl2+HCl if 6.00 g of CH4 are mixed with 6.00 g of Cl2, how much HCl can be made? What is the percent yield if 2.5 g are recovered from the reaction?
asked by John 
physics
An ultrasonic beam reflects off a tumor in an organ at an angle of 50 with a shift L = 7 cm. If the speed of the wave is 26 % less in the organ than in the medium above, determine the depth of the tumor below the organ's surface
asked by jude 
Chemistry
We're doing gas problems in chemsitry. I have no idea where to even begin on this problem: Air is 20% oxygen and 80% nitrogen. What is the mass of air in an automobile tire of 19.7 L and internal pressure of 46.7 PSI at 24 degrees celsius? (That pressure
asked by Avalon 
Math
Determine two coterminal angles (one positive and one negative) for the given angle. Give your answer in radians. A) 8pi/9 B) 8pi/45 For 8pi/9 I added 18pi/9 which equals 26pi/9  18pi/9 = 10pi/9. I do not know how to find the positive one for 8pi/9 and I
asked by Abbey 
9th grade
what qualities do people in todays society consider barbaric or monstrous? give a real life example
asked by adam